Update changelog

Author: fourjr

CHANGELOG.md

@@ -6,6 +6,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 This project mostly adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html);
 however, insignificant breaking changes do not guarantee a major version bump, see the reasoning [here](https://github.com/kyb3r/modmail/issues/319). If you're a plugin developer, note the "BREAKING" section.
 
+# v3.8.1
+
+### Fixed
+
+- Additional image uploads now render properly. ([PR #2933](https://github.com/kyb3r/modmail/pull/2933)))
+- `confirm_thread_creation` no longer raises unnecessary errors. ([GH #2931](https://github.com/kyb3r/modmail/issues/2931), [PR #2933](https://github.com/kyb3r/modmail/pull/2933))
+
+
 # v3.8.0
 
 ### Added

bot.py

@@ -1,4 +1,4 @@
-__version__ = "3.8.0"
+__version__ = "3.8.1"
 
 
 import asyncio